void
NodePainter::
drawEntryLabels(QPainter * painter,
NodeGeometry const & geom,
NodeState const & state,
NodeDataModel const * model)
{
QFontMetrics const & metrics =
painter->fontMetrics();
for(PortType portType: {PortType::Out, PortType::In})
{
auto const &nodeStyle = model->nodeStyle();
auto& entries = state.getEntries(portType);
size_t n = entries.size();
for (size_t i = 0; i < n; ++i)
{
QPointF p = geom.portScenePosition(i, portType);
if (entries[i].empty())
painter->setPen(nodeStyle.FontColorFaded);
else
painter->setPen(nodeStyle.FontColor);
QString s;
if (model->portCaptionVisible(portType, i))
{
s = model->portCaption(portType, i);
}
else
{
s = model->dataType(portType, i).name;
}
auto rect = metrics.boundingRect(s);
p.setY(p.y() + rect.height() / 4.0);
switch (portType)
{
case PortType::In:
p.setX(5.0);
break;
case PortType::Out:
p.setX(geom.width() - 5.0 - rect.width());
break;
default:
break;
}
painter->drawText(p, s);
}
}
}
void
NodePainter::
drawModelName(QPainter * painter,
NodeGeometry const & geom,
NodeState const & state,
NodeDataModel const * model)
{
NodeStyle const& nodeStyle = model->nodeStyle();
Q_UNUSED(state);
if (!model->captionVisible())
return;
QString const &name = model->caption();
QFont f = painter->font();
f.setBold(true);
QFontMetrics metrics(f);
auto rect = metrics.boundingRect(name);
QPointF position((geom.width() - rect.width()) / 2.0,
(geom.spacing() + geom.entryHeight()) / 3.0);
painter->setFont(f);
painter->setPen(nodeStyle.FontColor);
painter->drawText(position, name);
f.setBold(false);
painter->setFont(f);
}
void
NodePainter::
drawEntryLabels(QPainter* painter,
NodeGeometry const& geom,
NodeState const& state,
std::unique_ptr<NodeDataModel> const & model)
{
QFontMetrics const & metrics =
painter->fontMetrics();
auto drawPoints =
[&](PortType portType)
{
auto& entries = state.getEntries(portType);
size_t n = entries.size();
for (size_t i = 0; i < n; ++i)
{
QPointF p = geom.connectionPointScenePosition(i, portType);
if (entries[i].isNull())
painter->setPen(Qt::darkGray);
else
painter->setPen(QColor(Qt::lightGray).lighter());
QString s = model->data(portType, i)->name();
auto rect = metrics.boundingRect(s);
p.setY(p.y() + rect.height() / 4.0);
if (portType == PortType::IN)
p.setX(5.0);
else
p.setX(geom.width() - 5.0 - rect.width());
painter->drawText(p, s);
}
};
drawPoints(PortType::OUT);
drawPoints(PortType::IN);
}
void
NodePainter::
drawNodeRect(QPainter* painter,
NodeGeometry const& geom,
NodeDataModel const* model,
NodeGraphicsObject const & graphicsObject)
{
NodeStyle const& nodeStyle = model->nodeStyle();
auto color = graphicsObject.isSelected()
? nodeStyle.SelectedBoundaryColor
: nodeStyle.NormalBoundaryColor;
if (geom.hovered())
{
QPen p(color, nodeStyle.HoveredPenWidth);
painter->setPen(p);
}
else
{
QPen p(color, nodeStyle.PenWidth);
painter->setPen(p);
}
QLinearGradient gradient(QPointF(0.0, 0.0),
QPointF(2.0, geom.height()));
gradient.setColorAt(0.0, nodeStyle.GradientColor0);
gradient.setColorAt(0.03, nodeStyle.GradientColor1);
gradient.setColorAt(0.97, nodeStyle.GradientColor2);
gradient.setColorAt(1.0, nodeStyle.GradientColor3);
painter->setBrush(gradient);
float diam = nodeStyle.ConnectionPointDiameter;
QRectF boundary( -diam, -diam, 2.0 * diam + geom.width(), 2.0 * diam + geom.height());
double const radius = 3.0;
painter->drawRoundedRect(boundary, radius, radius);
}
void
NodePainter::
drawNodeRect(QPainter* painter,
NodeGeometry const& geom)
{
if (geom.hovered())
{
QPen p(Qt::white, 2.0);
painter->setPen(p);
}
else
{
QPen p(Qt::white, 1.5);
painter->setPen(p);
}
QLinearGradient gradient(QPointF(0.0, 0.0),
QPointF(2.0, geom.height()));
QColor darkGray1 = QColor(Qt::gray).darker(200);
QColor darkGray2 = QColor(Qt::gray).darker(250);
gradient.setColorAt(0.0, Qt::darkGray);
gradient.setColorAt(0.03, darkGray1);
gradient.setColorAt(0.97, darkGray2);
gradient.setColorAt(1.0, darkGray2.darker(110));
painter->setBrush(gradient);
unsigned int diam = geom.connectionPointDiameter();
QRectF boundary(0.0, 0.0, geom.width(), geom.height());
QMargins m(diam, diam, diam, diam);
double const radius = 3.0;
painter->drawRoundedRect(boundary.marginsAdded(m), radius, radius);
}
void
NodePainter::
drawValidationRect(QPainter * painter,
NodeGeometry const & geom,
NodeDataModel const * model,
NodeGraphicsObject const & graphicsObject)
{
auto modelValidationState = model->validationState();
if (modelValidationState != NodeValidationState::Valid)
{
NodeStyle const& nodeStyle = model->nodeStyle();
auto color = graphicsObject.isSelected()
? nodeStyle.SelectedBoundaryColor
: nodeStyle.NormalBoundaryColor;
if (geom.hovered())
{
QPen p(color, nodeStyle.HoveredPenWidth);
painter->setPen(p);
}
else
{
QPen p(color, nodeStyle.PenWidth);
painter->setPen(p);
}
//Drawing the validation message background
if (modelValidationState == NodeValidationState::Error)
{
painter->setBrush(nodeStyle.ErrorColor);
}
else
{
painter->setBrush(nodeStyle.WarningColor);
}
double const radius = 3.0;
float diam = nodeStyle.ConnectionPointDiameter;
QRectF boundary(-diam,
-diam + geom.height() - geom.validationHeight(),
2.0 * diam + geom.width(),
2.0 * diam + geom.validationHeight());
painter->drawRoundedRect(boundary, radius, radius);
painter->setBrush(Qt::gray);
//Drawing the validation message itself
QString const &errorMsg = model->validationMessage();
QFont f = painter->font();
QFontMetrics metrics(f);
auto rect = metrics.boundingRect(errorMsg);
QPointF position((geom.width() - rect.width()) / 2.0,
geom.height() - (geom.validationHeight() - diam) / 2.0);
painter->setFont(f);
painter->setPen(nodeStyle.FontColor);
painter->drawText(position, errorMsg);
}
}
